Piano.



F. LEOLA.

PIANO.

APPLICATION FILED JAN. 25, 190s.

tvv-Viv an: "Ti

at landt-i Q FLORENCE LEOLA, OF OAMPERDOWN, NEAR SYDNEY, NEW SOUTHWALES, AUSTRALIA.

PIANO Specification or" Letters Patent.

Patented Aug. 10, 1909.

Application filed January 25, 1909. Serial No. 474,148.

To all whom it' may concern.'

Be it known that FLonnivon intona, a subject et the King of GreatBritain and treland, residing at 120 George street, Camperdown, nearSydney, in the State of New South lllales, Australia, have inventedcertain new and useiul improvements in Fianos and Such like`i'nstruments, of which the tollowing is a speeication.

This invention relates to improvements in pianos. The tuning pin atpresent used in this class ot instrument is retained in the requisiteposition against the strain ot the wire by means of a pressure screw andlocknut manipulated from the bach of the instrument, but thisconstruction necessitates the removal of a portion of the bach coveringof the piano in order to replace a broken pin and usually requires theemployment oi' a second person to manipulate the said retaining screws.

Now this invention has for its object to provide a tuning pin, theretaining screw of which can be adjusted trom the front of thevrest-plate.

The invention consists essentially et a tuning pin the exposed portionoit which is oi ordinary construction but the portion which is bedded inthe wrest-plate consists of a conical enlargement forming a shoulderagainst which bears the retaining screw. i-"i corresponding aperture,tapered to receive this enlarged portion of the pin, is provided in thewrest-plate and so constructed that the shoulder of the enlargement isnearly flush with the face of the wrest-plate. rlhe retaining screw isinserted in the wrest-plate immediately above the tuning pin, in such aposition that the under surface of its head bears against the shoulderformed by the conical enlargement of the pin. But in order that theinvention may be clearly uuderstood reference is made to theaccompanying sheet of drawings in which Figure l is a sectionalperspective view of a portion of the wrest plate of a piano showing someof the improved tuning pins in position. Fig. 2 is a vertical sectionshowing two pins in position one in elevation the other in section. Fig. 3 shows a perspective view of the pin and retaining screw also thetapered aperture in the wrest-plate to receive the pin.

The pin el is formed with al very slightly conical enlargement 5 fittinginto correspondinglv tapered aperture (5 in the wrestplate T. iheretaining screw 8 is let into the. traine immediately above the pin insuch a position that the under surface of its head 9 bears against theshoulder' l0 ot the pin. it will follow from this construction that thedownward strain on the pin will, when the wire is at tension, tend tocause the shoulder of the pin to bear continuously against the head otthe screw. To provide t'or the possibility otl the parts becoming worn arecess ll is formed in the traine to receive the head et the screw. Topermit ot lubrication a small hole l2 is provided extending transverselyYfrom the end ot the tapered aperture G to the back of the wrest-plate.This hole will also serve to enable a broken pin to be driven out ot itsseat.

The method of operating my invention is as follows:-The key having beenfitted on to the free end of the pin and the wire having been strainedto the requisite tension, the retaining screw 8 is screwed hard againstthe shoulder l() oi the pin, thus firmly binding same and assuring thenecessary friction thereon to prevent its being revolved backward by thepull of the wire.

lWhat claim as my invention is zl. in a piano, in combination, ametallic wrest plate having tapered pin holes therein and screw holesimmediately thereabove, a plurality ot tuning pins having tapered shanksand a shoulder at the front end of said shaulrs, and a correspondingnumber ot screws inserted in said screw holes and having heads adaptedto engage the shoulders ot said pins.

2. ln a device of the class described, in combination, a metallic wrestplate having a plurality of tapered holes therein and Jin.

Signed at Sydney New South lll/Tales this 23rd day of November 1908.

FLORENCE LECLA.

gaging the shoulder of its Corresponding le l Witnesses ARTHUR GIPPEL,JOHN P. BRAY.

